This UNESCO World Heritage area, also known as Halong Bay on land, stretches along the Ngo Dong River and is flanked by views of majestic karst cliffs, limestone caves, grottoes, and vibrant green rice fields. Tam Cốc literally translates to “three caves,” referring to the Ca, Hai and Ba caves carved by centuries of flowing water. Locals often refer to the surrounding fields as the Green Sea, a poetic nod to the way the wind ripples through the endless rice paddies like waves

Located south of the Red River Delta Region 90 km's from Hanoi, Hoa Lư was a bustling capital city in turmoil during the 10th and 11th centuries. For a short time, it was the economic, political and cultural centre of medieval Vietnam. In 968 A.D, it was strategically built in a flat verdant valley, protected between steep limestone mountains, which created a virtually impenetrable barrier to human traffic.